engrailed
adjective
en·grailed in-ˈgrāld 
en-
1
: indented with small concave curves
an engrailed heraldic bordure
2
: made of or bordered by a circle of raised dots
an engrailed coin
Word History
Etymology
Middle English engreled, from Anglo-French engreslé, literally, reduced, thinned, from en- + gresle slender, from Latin gracilis
First Known Use
15th century, in the meaning defined at sense 1